1968934009171 has 4 divisors (see below), whose sum is σ = 1969194010672. Its totient is φ = 1968674007672.

The previous prime is 1968934009067. The next prime is 1968934009181. The reversal of 1968934009171 is 1719004398691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1968934009171 - 2²⁷ = 1968799791443 is a prime.

It is a super-2 number, since 2×1968934009171² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968934009181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129989391 + ... + 130004536.

It is an arithmetic number, because the mean of its divisors is an integer number (492298502668).

Almost surely, 2^{1968934009171} is an apocalyptic number.

1968934009171 is a deficient number, since it is larger than the sum of its proper divisors (260001501).

1968934009171 is an equidigital number, since it uses as much as digits as its factorization.

1968934009171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260001500.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 1968934009171 in words is "one trillion, nine hundred sixty-eight billion, nine hundred thirty-four million, nine thousand, one hundred seventy-one".